[Efficiency of the acute geriatric units compared to the rest of the hospital departments. A 5-year audit of the case-mix adjusted for diagnosis-related group]. / Eficiencia de las unidades de agudos de geriatría frente al resto de servicios hospitalarios. Análisis de la casuística de 5 años ajustada por GRD.

INTRODUCTION: Hospital occupancy rate by older patients is high, and it will be even higher in the future. Their hospital stay is usually longer, making it important for hospitals to develop structures with the best efficiency possible. METHOD: Hospital discharges of patients older than 75years with the 15 most frequent Diagnosis-Related Groups (DRG) in Geriatrics were recorded during a 5-year period in a 1,200-bed hospital. Length of stay was compared between the two acute geriatric units (AGU), one in the general hospital (GH) and another in an affiliate hospital (AH), as well as with the rest of departments. RESULTS: A total of 14,948 discharged patients were included. Length of stay was 2.9 (25%) days shorter in AGU units than in the rest of departments. Differences were 22% (9.2 vs 11.7days) in 2011, 16% (9.3 vs 11.1days) in 2012, 21% (9.3 vs 11.1days) in 2013, 34% (7.4 vs 11.1days) in 2014, and 25% (8.3 vs 11days) in 2015 in the GH. Differences were 18% (10.4 vs 12.7days) in 2011, 19% (9.5 vs 11.7days) in 2012, 25% (8.8 vs 11.7days) in 2013, 24% (8.8 vs 11.6days) in 2014, and 32% (9 vs 13.1days) in 2015 at the AH, all of them with a P<.05. CONCLUSIONS: AGU are 25% more efficient than the rest of hospital departments in managing hospital admissions of patients older than 75years.